`lim_(x->2) (sec^x theta-tan^x theta-1)/(x-2)=`

the value of lim_(x rarr(pi)/(2))(sec theta-tan theta)

lim_(x rarr2)((cos theta)^(x)(sin theta)^(x)-1)/(x-2) equals

If x = (sec^(2) theta - tan theta)/(sec^(2) theta + tan theta) , then which one of the following is correct ?

If sec theta=x+(1)/(4x), then sec theta+tan theta=x,(1)/(x) (b) 2x,(1)/(2x)(c)-2x,(1)/(2x)(d)-(1)/(x),x

If x= sec theta + tan theta, then x+1/x=.

If x= sec theta + tan theta, then x+1/x=.

x = a sec theta, y = b tan theta .

If f(x) = |("sec" theta, "tan"^2 theta,1),(theta"sec"x,"tan"x,x),(1,"tan"x-"tan"theta,0)| then f^(1)(theta) is